No problem, we've got 8581 and 2372 to multiply
8581 × 2372 = 2372 × (8581)
+ 2372 × 1 what gives us 2372
+ 2372 × 80 that results in 189760
+ 2372 × 500 that is equal 1186000
+ 2372 × 8000 giving us 18976000

= 20354132
